Fairbanks H90-5200-A Digital Instrument - Manual (Page 39)

50515 39 Issue #2 4/04
APPENDIX II: Serial Output Installation
The Standard Serial RS-232 output is factory installed at J3, pins 1-5 on the main PC board,
with a shunt jumper placed on pins 8 and 9. To configure the instrument for 20mA current
loop output, move the connector at J3 to pins 5-9 and move the shunt jumper from pins 8
and 9 to pins 2 and 3 (see Section 3, Figure 3-2).
Accessory 145: I/O board configured for 20mA current loop, serial output, used to
output to a remote display or computer.
Accessory 146: I/O Board configured for RS-232 output to a printer or computer.
Accessory 147: I/O Board configured for RS-485 output to a computer.
The second serial output accessory (145,146,147) is mounted in the bottom of the
instrument. Four weld-studs are provided for mounting the accessory board.
To install the accessory:
1. Unplug the AC power cord from its outlet.
2. Remove the four bolts holding the front panel to the instrument.
3. Lift the instrument front panel and carefully remove all cables from the main
PC Board. Set the front panel aside.
4. Remove the hole plug from the accessory port on the back of the instrument.
5. Install the 9 pin accessory connector in the accessory port.
J1
J2
SW1
I/O ASSY
2428
R10
R8
R6
R7
R4